SkSLStringStream.h

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/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SKSL_STRINGSTREAM
#define SKSL_STRINGSTREAM
 
#include "include/core/SkData.h"
#include "include/core/SkStream.h"
#include "src/sksl/SkSLOutputStream.h"
 
namespace SkSL {
 
class StringStream : public OutputStream {
public:
    void write8(uint8_t b) override {
        SkASSERT(fString.empty());
        fStream.write8(b);
    }
 
    void writeText(const char* s) override {
        SkASSERT(fString.empty());
        fStream.writeText(s);
    }
 
    void write(const void* s, size_t size) override {
        SkASSERT(fString.empty());
        fStream.write(s, size);
    }
 
    size_t bytesWritten() const {
        return fStream.bytesWritten();
    }
 
    const std::string& str() const {
        if (!fString.size()) {
            sk_sp<SkData> data = fStream.detachAsData();
            fString = std::string((const char*) data->data(), data->size());
        }
        return fString;
    }
 
    void reset() {
        fStream.reset();
        fString = "";
    }
 
private:
    mutable SkDynamicMemoryWStream fStream;
    mutable std::string fString;
};
 
}  // namespace SkSL
 
#endif